Analysis of tensile and fracture toughness results on irradiated molybdenum alloys, TZM and Mo-5%Re

M. Scibetta; R. Chaouadi; J. L. Puzzolante

doi:10.1016/S0022-3115(00)00266-X

Analysis of tensile and fracture toughness results on irradiated molybdenum alloys, TZM and Mo-5%Re

M. Scibetta, R. Chaouadi, J. L. Puzzolante

Research output › peer-review

Abstract

Due to their good resistance at high temperature, good thermal conductivity and swelling resistance, molybdenum alloys are amongst the candidates for divertor structural materials. However, little is known about their tensile and fracture toughness behaviour, in particular after irradiation-induced embrittlement. This paper aims to investigate the tensile and fracture toughness properties of two molybdenum alloys, namely TZM and Mo-5%Re. Tensile and compact tension specimens were irradiated in the BR2 reactor at 40 °C and 450 °C up to a fast neutron fluence of 3.5×10²⁰ n/cm² (0.2 dpa). Tests were performed on both precracked and notched specimens. Results show a drastic decrease of the ductility due to irradiation, but only a slight decrease of the fracture toughness in the lower shelf domain.

Original language	English
Pages (from-to)	455-460
Number of pages	6
Journal	Journal of Nuclear Materials
Volume	283-287
Issue number	PART I
DOIs	https://doi.org/10.1016/S0022-3115(00)00266-X
State	Published - Dec 2000

ASJC Scopus subject areas

Nuclear and High Energy Physics
General Materials Science
Nuclear Energy and Engineering

Access to Document

10.1016/S0022-3115(00)00266-X

Cite this

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title = "Analysis of tensile and fracture toughness results on irradiated molybdenum alloys, TZM and Mo-5%Re",

abstract = "Due to their good resistance at high temperature, good thermal conductivity and swelling resistance, molybdenum alloys are amongst the candidates for divertor structural materials. However, little is known about their tensile and fracture toughness behaviour, in particular after irradiation-induced embrittlement. This paper aims to investigate the tensile and fracture toughness properties of two molybdenum alloys, namely TZM and Mo-5%Re. Tensile and compact tension specimens were irradiated in the BR2 reactor at 40 °C and 450 °C up to a fast neutron fluence of 3.5×1020 n/cm2 (0.2 dpa). Tests were performed on both precracked and notched specimens. Results show a drastic decrease of the ductility due to irradiation, but only a slight decrease of the fracture toughness in the lower shelf domain.",

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AB - Due to their good resistance at high temperature, good thermal conductivity and swelling resistance, molybdenum alloys are amongst the candidates for divertor structural materials. However, little is known about their tensile and fracture toughness behaviour, in particular after irradiation-induced embrittlement. This paper aims to investigate the tensile and fracture toughness properties of two molybdenum alloys, namely TZM and Mo-5%Re. Tensile and compact tension specimens were irradiated in the BR2 reactor at 40 °C and 450 °C up to a fast neutron fluence of 3.5×1020 n/cm2 (0.2 dpa). Tests were performed on both precracked and notched specimens. Results show a drastic decrease of the ductility due to irradiation, but only a slight decrease of the fracture toughness in the lower shelf domain.

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